Edward newell case



Patented July 26, i898.

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UNITED STATES PATENT Trice.

EDVARD NEVELL CASE, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF TO S. M. FISCHER, OF SAME PLACE.

ALARM-PADLOCK.

SPECIFICATION forming part of Letters Patent No. 607,831, dated July 26, 1898.

Application iled August 26, 1897. Serial No. 649,630. (No model.)

To ctZZ whom. 2115 may concern.:

Be it known that I, EDWARD NEwELL CASE, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a new and useful Explosive Alarm-Padlock for Bicycles, Switches, Car-Doors, Trunks, and other Objects, of which the following is a specification.

This invention relates to improvements in alarm-locks, and refers more specifically to that class of such locks in which a cartridge' is so placed within the lock-casing as to be discharged when the lock is being tampered with.

The object of the invention is to provide a device of the character mentioned in which the cartridge will be made to explode either when it is attempted to pick the lock with a false key or other instrument or to render the same inoperative by attempting to pull the shackle from the casing.

The invention consists in the matters hereinafter set forth, andmore particularly pointed out in the appended claims.

In said drawings, Figure 1 is a sectional elevation of the lock shown in its locking Fig. 2 is a plan view showing the shackle swung to one side ready to be attached to the article to be locked. Fig. 3- is a top plan view of the firing device. Fig. 4t is a sectional elevation of the iirin g device. Fig. 5 is a bottom plan view thereof. Fig. 6 is a section of the barrel within which the iiring device is contained, together with the chamber in which is locatedthe spring for actuating the shackle. Fig. 7 is a detail view of the locking-post and tumblers. Fig. 8 is an elevation of the key. Fig. 9 is a view showing the application of the lock to a sprocket-wheel of a bicycle. Fig. l0 is a detail view of the cam attached to the lockingpost, and Fig. ll is a separate view of one of the tnmblers.

In said drawings, S designates the lockcasing, which is shown of oblong rectangular form, and A designates the shackle, which is mounted in one end of said casing. Said shackle is connected at one end by a swiveljoint connection with a shackle-rod C, which is mounted in one side of the casing, longitudinal thereof, and to the lower end of which the locking mechanism is attached, as will hereinafter be described. Said shackle-rod is mounted to have longitudinal movement in the casing and is engaged between its ends by a bearing-bracket r. The opposite end of the shackle A is adapted to enter an aperture 'q in the end wall of the casing opposite said shackle-rod C and engages a longitudinallymovable plunger c, which is 6o mounted in the upper end of a plunger-cham ber d, which latter is located within the casing parallel with and opposite said connecting-rod C. Said plunger is provided with a stem c, which passes through the plungerchamber d, and the plunger is actuated by a spring t, which, as herein shown, is of spiral form and surrounds said stem. VSaid spring engages at one end a shoulder in the lower end of said chamber and at its opposite end 7o a shoulder between the plunger e and stem yu and acts to hold said plunger in its elevated position, and to thereby eject the shackle out of the casing when the locking mechanism is released. Said shackle is provided on its end adjacent the shackle-rod C with a stop Z, which serves to limit the rotary movement thereof, as clearly shown in Fig. 2. Y

F designates a barrel within which the liring or alarm device is located, said barrelbe- 8o ing generally of cylindric form and extending between the opposite ends of the casing parallel with the plunger-chamber d. As herein shown, said barrel F and chamber d are made integral; butit will be obvious that they may be made separate and separately attached within the casing. Said barrel is divided into an upper and lower section, the upper section being adapted to contain the cartridge and the lower section the ring device by 9o means of which the cartridge is exploded. As herein shown, said cartridge is designed to be inserted into the barrel from the outer end of the casing. The iiring device is constructed as follows:

f designates a cylindric shell Whichis of hollow construction inits lower end and is provided in its upper end with a central bore, through which passes a tiring-pin x. Said firing-pin is provided on its inner end with a roo head, and between said head and a shoulder in the lower end of the hollow portion of the cylindric shell is mounted an expansion-sprin g j, which acts to hold the firing-pin in its innermost position, with the inner end thereof projecting slightly beyond the inner end of the casing f. The firing-pin head is provided with a detent-arm m2, which passes outwardly from the head and is provided at its outer end with a detent fm, which is adapted when in the barrel F to project through an opening in the outer end thereof and to have locking engagement with a shoulder n2, formed upon the inner edge of said opening. Said detentarm is of such length that when the detentm is engaged with the shoulder 'n2 the head of the firing-pi1r will be moved outwardly, and the springj thereby brought under tension. With this construction when the detent has been forced out of engagement with the sho ulder n2 the spring will act to forcibly drive the firing-pin into contact with the cartridge, and to thereby explode the same. The detentarm m2 is made of spring metal and is so constructed as to normally hold the detent away from the central axis of the casingf. Said firing device and the cartridge are inserted from the outer end of the casing, and in order that the parts may be maintained in their proper relation when the firing device is being inserted the shellf is provided upon one side thereof with a rib or projection Z, which.

passes through a slot O in the barrel F when the device is being inserted therein. Said slot O is connected at its inner end with an opening P in the wall of the barrel, which is provided with an inwardly-facing shoulder which is adapted to be engaged by the outer end of the rib Z, said tiring device being inserted within the barrel until the ribV passes said shoulder, and is then rotated to bring said rib out of the plane of the slot O and into engagement with the shoulder, and to thereby prevent outward movement of said ring device until the same be rotated again to bring the rib into the plane of the slot O. When said iiring device is being inserted within the barrel F, the detent m engages the shoulder n2, and thereby moves the firing-pin outwardly against the action of the spring j and holds it in such position until released by the means hereinafter to be described.

In order to afford additional protection against the locking device being removed when the shackle is in its locking position, the barrel is provided, on the outside thereof, with a dog g, mounted upon a spring g2,which tends to hold it away from the wall of said barrel. Said barrel is provided at this point with an aperture 02, and the tubular shellfis provided with a similar opening o3,which registers with said opening o2 when the casing is in position within the barrel. The plunger i; is extended through the lower wall of the plunger-chamber CZ, so as to engage at its outer vend the dog g and to move it into contact with a downwardly-facing shoulderin said opening o3of the casing f. W'ith this construction when the barrel has been charged, the firing t' designates a pawl which is mounted upon the lower end of the shackle-rod C and extending inwardly therefrom. Said pawl is provided with a spring c, which acts to normally hold it away from the shackle-rod.

n designates a bell-crank lever which is pivoted at its angle adjacent to the barrel F, with one arm thereof adapted to engage a shoulder or detent on the pawl t'. The other arm of said bell-crank lever extends toward the outer end of the casing and engages at its outer end a rocking lever o, which is pivoted between its ends and extends atits outer end m2 and operates to move said detent out of engagement with the shoulder n2, and to thereby allow the spring;l to move the ringpin into contact with the cartridge.

d designates a locking-post which is located adjacent to the lower end of the shackle-rod C, which is adapted for the reception of a key, by means of which the locking mechanism is released. Said locking-post is provided with a slot through which the lips r2 r4 of the key are adapted to pass, and with an opening in the inner end thereof in a plane at right angles to the slot adapted to receive said lips when the key is in its normal position in said post.

tu designates a cam-plate which is rigidly mounted upon the end of thelocking-post remote from the end into which the key is inserted. Said cam-plate is adapted to rest with the edge thereof which is adjacent the pawl t'just out of contact with said pawl and in position to move said pawl when the camplate is turned toward the rod C, and to thereby move said pawl out of engagement wit-h the lever fn to allow the rod C to move inwardly under the action of the spring t, so as to release the shackle A from thecasing.

c2 designates a spring, which is herein shown as mounted upon the bearingrand yieldingly engages at its opposite end the adjacent arm of the lever n. regulates the force necessary to explode the cartridge by exerting tension upon the shackle.

b b2 b3 designate tumblers which are movably mounted within the casing adjacent to the cam-plate. Said tumblers are provided with slots U2 c3, which intersect each other, and said slots are engaged by a guide-pin s2, which projects outwardly from t-he cam-plate The tension of said spring 'adjacent to the detent m of the detent-arm IOO IIO

w, said guide-pin being adapted to normally rest in the slot 'U3 to prevent the locking mechanism from being released except when the tumblers are actuated by the particular key designed therefor. Said tumblers are also provided with a third slot i3, extending parallel with the slot n3, which is engaged by a guide and stop block y, by means of which the same may be guided laterally toward and from the barrel F, containing the firing device. Within said slots are mounted springs 2, which tend to normally maintain the tumblers against or adjacent to the locking-post and to' yieldingly hold the tumblers against the key while unlocking.

102 designates an inwardly-projecting lip on the key, which is adapted to engage the cam-plate w when the key is turned within the locking-post to release the locking mechanism.

The operation of the device is as follows The 'key is inserted into the locking-post until the lips are within the plane of the side opening shown in Fig; 7, when the key will be turned to the left, with the lips r2 r4 engaging the tumblers b b3 and the depression r3 engaging the tumbler b2 to move the same away from the post to bring the slots o2 into register and opposite the guide-pin s2. At this time the lip @u2 will strike a shoulder on the cam w, which will act to rotate said cam upon its axis of rotation and to move the guide-pin s2 within the slots v2. The cam w acts to move the pawlz` out of engagement with the lever n, after which the shackle will be moved outwardly by the action of the spring t. It will be noted that this operation of the lock will not disturb the detent m of the ring device, as the tumblers and lips of the key are so constructed and arranged that thetumblers will not come into contact with the detent m of the firing device. If, however, a key of different shape be inserted into the lock, itwill not act to actuate the tum blers so as to release the locking mechanism, but will move the tumblers laterally toward the detent m, and thereby actuate the detent to release the firing mechanism. Again, if it be attempted to release the locking mechanism by pulling the shackle from the casing it will be seen that such operation will move the shackle-rod C outwardly, and thereby move the pawl connected therewith against one arm of the lever n, which will cause the other arm thereof to move the rocking lever o against the detent, and thereby trip the tiring mechanism.

Fig. 9 illustrates the application of mylock to the sprocket-wheel of a velocipede.I It will be obvious that if an attempt were made to operate said machine the rotation of the sprocket-wheel wouldtend to pull the shackle from the casing, with the result above mentioned.

I claim as my invention- 1. In analarm-lock the combination of a` casing, a shackle mounted therein, a barrel in said casing, an alarm device mounted in said barrel, and means actuated by the shackle for locking said alarm device within the barrel.

2. In an alarm-lock the combination of a casing, a shackle mounted therein, a barrel in said casing, an alarm device in said barrel, a dog mounted adjacent to said barrel and adapted to engage said alarm device, and a spring-pressed plunger engaged at one end by said shackle for actuating said dog.

3. In an alarm-lock the combination of a casing, a shackle mounted therein, a barrel in said casing, an alarm device comprising a hollow cylindric shell, a spring-pressed plunger in said shell adapted to strike an alarm, said shell being provided in its side wall with an opening andthe barrel being provided with a registering opening, a dog mounted on the barrel adapted to pass through said openings and engage a shoulder on the shell to hold the same from movement within the barrel, and means operatively connected to shackle for maintaining said dog in its locking position.

4. In an explosive-lock the combination of a casing, a shackle mounted therein, a barrel in said casing adapted to receive at one end a cartridge, a tiring device mounted in said barrel comprising a hollow cylindric shell provided with a spring-pressed firing-pin, and means operatively connected with the shackle for lockingthe said firing device within the barrel.

5. In an alarm-lock the combination of a casing, a spring-pressed shackle therein, an alarm device in said casing embracing a setting detent or trigger, tumblers in said casing adapted to be actuated bya key, operative connections between said tumblers and the shackle, said tumblers acting when engaged by a key of proper form to release said shackle, but when engaged by a key of other form to actuate said setting detent or trigger of the alarm device.

6. In an alarm-lock the combination of a casing, a spring-pressed shackle therein, an alarm device in said casing, a spring-pressed pawl on the outer end of said shackle, alocking-post adjacent to said pawl, a cam-plate connected with said post and adapted to actuate said pawl, and operative connections between said cam-plate and the alarm device.

7. In an alarm-lock the combination of a casing, a spring-pressed shackle mounted thereon, an alarm device in said casing, a spring-pressed pawl operatively connected with said shackle, a locking-post, a cam-plate connected with said post and adapted to actuate said pawl, tumblers operatively connected with said cam-plate, said tumblers being constructed and mounted in such relation to the firing device that when actuated by a key other than of the proper form they will release the alarm device and not release the locking mechanism.

8. In an alarm-lock the combination of a casing, a springpressed shackle mounted therein, a longitudinal sliding shackle-rod in ICO IIO

said casing having swivel connection with spring pressed lever n and lever o, all oper` ating When the shackle is pulled from the casing to actuate the alarm device.

lO. In an alarm-lock the combination of the casing, an alarm device, the shackle A, the shackle-rod C connected therevvith,tl1e springpressed pawl 'i connected with said post, the locking-post a, the cam-plate w connected therewith, the tumblers l), b2, 3, operatively connected with said plate, the detent m of the alarm device, said parts being so constructed and arranged that when a key of proper form is inserted into the locking-post the locking mechanism Will be released Without actuating the alarm device, but When a key of other form is inserted therein the alarm device Will be actuated without releasing the locking mechanism. L

11. In an alarm-lock the combination of a casing, a shackle mounted therein, au alarm device embracing a setting detent or trigger, a pawl mounted on one end of said shackle, a bell-crank lever one arm of which engages said paWl and the other arm of which is adapted to actuate said detent or trigger when tension is brought upon the shackle to draw it from the casing and a spring applied to said lever and acting in opposition to said tension upon the shackle.

12. In an alarm-lock of the character described, the combination of the ring device embracing the shell f provided with the slot- Z2 and a key provided With the projection L.

13. In an alarm-lock the combination of a casin g, a locking and unlocking device therein, an alarm device in said casing, tumblers in said casing adapted to be actuated by a key, and operative connections between said tumblers and the locking and unlocking device, said tumblers acting when engaged by a key of proper form to actuate said locking and unlocking device, but when engaged by a key of other form to actuate said alarm device.

14. In an alarm-lock the combination of a casing, ashackle therein, an alarm device embracing a setting detent or trigger, operative connections between said shackle and detent or trigger acting to actuate the latter When tension is brought upon the shackle to draw it from the casing, and a spring applied to maintain a predetermined tension required to actuate the alarm device.

l5. In an alarm-lock, the combination of a casing, an alarm device therein, embracinga detent by which said alarm device is held out of action, a locking mechanism embracing tumblers Which prevent the locking mechanism from being released except when said tumblers are actuated by the key designed therefor, said tumblers being constructed to engage and actuate the said detent and release the alarm device When acted upon by a key of other form, a part such as the shackle described which is movably connected with the lock-case and which has operative connection With said detent acting to actuate the latter when tension is brought upon said movable part in a direction to draw it from the casing, and a spring applied to said movable .part to maintain a predetermined tension required to actuate the alarm device.

Signed at Chicago, in the county of Cook and State of Illinois, this 23d day of August, 1897.

EDVARD NEVELL CASE.

Witnesses:

LINA CARDWELL, WALTER H. CoTToN. 

